October Weather in St. Thomas, Canada

Last updated: June 18, 2025

The average temperature in St. Thomas, Canada during October is 12°C (55°F). Daily temperatures can range from a chilly 1°C (35°F) to a pleasant 26°C (78°F). Prepare for some moisture as precipitation averages 123 mm (4.9 in) over 15 days of the month, with a relatively high humidity level of 84%.

October Temperature in St. Thomas

In October in St. Thomas, the average temperature is 12°C (55°F). The maximum can reach 26°C (78°F), while the minimum can be as low as 1°C (35°F). This moderate climate makes St. Thomas an ideal destination for travelers seeking a pleasant escape.

October Weather in St. Thomas: Daily Temperature Highs, Lows, and Averages

The chart illustrates October temperature patterns in St. Thomas, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In St. Thomas, October typically has an average temperature of 12°C (55°F), with highs reaching up to 26°C (78°F) and lows dropping to around 1°C (35°F).

Data source: Temperature data for St. Thomas generated using information from the Copernicus Climate Change Service.

October Precipitation in St. Thomas

In St. Thomas in October, the total precipitation amount is 123 mm (4.9 in) over a span of 15 days.

October Precipitation Trends in St. Thomas

The chart displays monthly precipitation patterns in St. Thomas, with values for each month alongside October’s data, which is highlighted for easy comparison. It shows the amount of precipitation, providing insights into how October’s conditions compare to those of other months. In St. Thomas, October typically receives around 123 mm (4.9 inches) of precipitation spread over approximately 15 days.

Data source: Precipitation data for October generated using information from the Copernicus Climate Change Service.

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Millimeters (mm) Inches (in)

October Humidity in St. Thomas

In St. Thomas in October, humidity is 84%. With an average temperature of 12°C (55°F), this humidity feels like a thick blanket wrapping around you, making it a challenge for traveling as you might feel sticky and uncomfortable while exploring the sights.

October Average Humidity in St. Thomas

This chart illustrates the average monthly humidity levels in St. Thomas, with October’s data highlighted for easy comparison. It shows the fluctuation in humidity throughout the year, helping you understand how conditions vary by season. In October, average humidity in St. Thomas is approximately 84%, offering insight into how humid the weather typically is during this month.

Data source: Humidity data for October generated using information from the Copernicus Climate Change Service.

October UV Index in St. Thomas

In St. Thomas in October, the maximum UV index is 6, which corresponds to a high Exposure Category. The time to burn is approximately 25 minutes. To find the hourly UV index in St. Thomas, you can refer to this Hourly UV Index in St. Thomas.

Maximum UV Index Levels in St. Thomas for October

The chart shows the monthly maximum UV Index (UVI) for St. Thomas in October, representing the highest UV radiation level. The UVI measures the intensity of ultraviolet radiation from the sun, indicating the potential risk of sunburn and UV-related health issues. In October, the maximum UV index in St. Thomas typically reaches 6, which falls under the high exposure category.

Data source: St. Thomas October UVI data generated using information from the Copernicus Climate Change Service.

UV Risk Categories

Extreme (11+): Avoid the sun, stay in shade.
Very High (8-10): Limit sun exposure.
High (6-7): Use SPF 30+ and protective clothing.
Moderate (3-5): Midday shade recommended.
Low (0-2): No protection needed.

How October Weather in St. Thomas Compares to Other Months

Weather in St. Thomas varies notably across the year, with each month offering distinct climate conditions. This page compares October’s weather to other months in St. Thomas, focusing on differences in temperature, rainfall, humidity, and UV levels.

This table compares monthly weather conditions in St. Thomas, showing how October’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
	Temperature	Precipitation	Humidity	UV
January Weather	-3°C (27°F)	76 mm (3.0 inches)	90%	moderate
February Weather	-3°C (27°F)	79 mm (3.1 inches)	90%	moderate
March Weather	1°C (34°F)	81 mm (3.2 inches)	87%	moderate
April Weather	6°C (43°F)	106 mm (4.2 inches)	87%	very high
May Weather	13°C (55°F)	99 mm (3.9 inches)	82%	very high
June Weather	19°C (66°F)	93 mm (3.7 inches)	81%	very high
July Weather	22°C (72°F)	91 mm (3.6 inches)	79%	very high
August Weather	22°C (71°F)	96 mm (3.8 inches)	80%	very high
September Weather	18°C (65°F)	82 mm (3.2 inches)	81%	very high
October Weather	12°C (55°F)	123 mm (4.9 inches)	84%	high
November Weather	5°C (41°F)	94 mm (3.7 inches)	88%	moderate
December Weather	1°C (34°F)	77 mm (3.0 inches)	87%	low